METHOD AND DEVICE FOR MEASURING, IN REAL TIME AND IN SITU, THERMODYNAMIC DATA OF A BATTERY (ENTHALPY AND ENTROPY)

• Main Authors: SENAME OLIVIER, YAZAMI RACHID, EL OUTMANI SOHAIB, GRANJON PIERRE
• Format: Patent
• Language: Chinese; English
• Published: 25.05.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TESTING

The invention relates to a method and a device for measuring, in real time and in situ, thermodynamic data of a battery (enthalpy and entropy). The object of the invention is to provide a reliable method for measuring, in situ, online and in real time, the variation in entropy (deltaS) of a battery. To this end, the method is characterized in that it consists primarily in: (phase I) producing a prior model of the battery: (a) charging the battery; (b) and/or discharging the battery; (c) measuring actual variables; (d) modeling the electrical behavior of the battery during charging (a) and/or discharging (b) in order to estimate the electrical parameters of the battery; (e) estimating electrical parameters of the battery; (f) modeling the thermal behavior of the battery during charging (a) and/or discharging (b) in order to estimate deltaS in situ, online and in real time; (g) estimating deltaS, by using at least one of the electrical parameters estimated in step (d); (phase II) measuring deltaS of the battery